Mercury Quicksilver NEW OEM Water Separating Fuel Filter 35-866594K01 NOS 0810

Mercury / Quicksilver OEM Water Separating Fuel Filter — Part Number 35-866594K01
Brand: Mercury / Quicksilver | Condition: New Old Stock (NOS)

You are purchasing a genuine Mercury/Quicksilver OEM Water Separating Fuel Filter, part number 35-866594K01, for MerCruiser 1.6L Vazer 4-cylinder and 3.0L MPI sterndrive engines. This spin-on fuel filter removes water and fine fuel contaminants before they can reach the fuel injectors or carburetors — protecting the fuel system from corrosion, clogging, and premature wear, and ensuring clean, reliable fuel delivery for consistent engine performance. Features 10-micron filtration media, an internal epoxy coating for corrosion resistance, and a painted exterior finish to resist rust and moisture exposure. This is an authentic factory original part — never installed, never used.

Condition Details: This is a New Old Stock (NOS) part. The fuel filter itself is in new, uninstalled condition. As is common with NOS inventory, the original packaging may show signs of age, including shelf wear, dust, or minor cosmetic blemishes on the bag or box. The part is new and fully functional.

Part Number / Supersede Information:

• Primary OEM Part Number: 35-866594K01
• Also cross-references: 35-866594Q01
• Current OEM replacement: 35-8M0093688
• This part number may have been further superseded by an updated Mercury part number. We recommend verifying any current supersede numbers through your local Mercury Marine dealer or the official Mercury parts catalog prior to ordering.

Compatible Equipment: MerCruiser 1.6L Vazer 4-cylinder sterndrive engines and 3.0L MPI sterndrive engines — verify specific engine serial number and model fitment prior to ordering.

Why Choose OEM Parts? OEM parts are engineered and manufactured to exact factory tolerances, ensuring a precise fit, reliable performance, and long service life. Unlike aftermarket alternatives, OEM parts are designed specifically for your engine — no modifications, no guesswork.

Returns: We proudly offer hassle-free returns. If you are not completely satisfied with your purchase for any reason, simply open a return request through eBay within 30 days of purchase and we will take care of you promptly.

Thank you for choosing QBS Parts Inc! We truly appreciate your business. If you have any issues whatsoever with your order, please give us the opportunity to resolve it before leaving feedback — we are committed to making every transaction a great experience. Please verify fitment using your equipment's model and serial number before purchasing. Feel free to message us with any questions — we're here to help!

QBS Parts, Inc. — Gardena, CA